Threat Actors Abuse Proofpoint’s and Intermedia’s Link Wrapping Features to Hide Phishing Payloads

The latest wave of credential-phishing campaigns has revealed an unexpectedly convenient ally for threat actors: the very e-mail security suites meant to protect users. First observed in late July 2025, multiple phishing clusters began embedding malicious URLs inside the legitimate link-wrapping services of Proofpoint’s Protect platform (https://urldefense.proofpoint.com/v2/url?u=) and Intermedia’s LinkSafe (https://safe.intermedia.net/?u=). Because corporate filters already […]

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